/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/PBDRigidDynamicSpringConstraints.h
Add a constraint initialized from current world-space particle positions. You would use this method when your objects are already positioned in the world.
[FConstraintContainerHandle](API\Runtime\Chaos\Chaos\FPBDRigidDynamicSpringConstraint-_1\FConstraintConta-) * AddConstraint ( const [FConstrainedParticlePair](API\Runtime\Chaos\Chaos\FPBDRigidDynamicSpringConstraint-_1\FConstrainedPart-) & InConstrainedParticles )